this trick will allow u to use ur usb stick as a key to boot into windows . if someone tries to start the
computer without the usb stick , it will display boot errors. before we begin , let me tell u that playing
with the bios and boot files of ur computer may result in u not being able to boot into ur windows partition ; so continue at ur own risk!
step1: unhide hidden and protected files: go to tools > options > view , check show hidden files and uncheck hide protected system files
step2: from the drive where windows is installed copy the files boot.ini,ntdlr and ntdetect.com to ur usb stick
step3: now we need to go into ur bios , so restart and keep jabbing (F8 or DEL) as soon as the pc starts
step4: once the bios , enable usb drive as the first boot device u might have to enable usb legacy support on older bioses
step5: restart ur pc if all goes well , u should be able to log into windows if not, then unplug the usb stick , return to the bios and change the first boot device to ur hard disk drive and repeat the steps above
step6: once u r logged into windows , go to ur windows drive and rename boot.ini to boot.bak
step7: to check if u have setup everything correctly , eject usb and reboot the pc u should get error message on the screen such as "invalid boot.ini" or " windows could not start "
step8:incase windows does not load , use ur windows recovery disk by followin the steps at http://tinyurl.com/s9sd2